baber/WOPTO huggingface dataset:
Patent GB-2068124-A (GB)
Title: Conditioning unit for use with linear variable differential transformers
IPC: G01P3/56
Filed: 1980-01-26
Abstract: The invention comprises an excitation and conditioning system for one or two linear variable differential transformers (L.V.D.Ts.) of standard design to give a D.C. analogue voltage output representing:-       (a) Position of motion relative to any datum point.   (b) Velocity of motion.   Automatic internal surveillance of the integrity of the output signals ensures that any electrical failure of the L.V.D.T. or the conditioning unit is immediately indicated. When using two L.V.D.Ts. driven from separate motions, a further output gives the difference in position of the two motions and can be used to synchronise the motions when required. An oscillator produces two sinusoidal outputs in quadrature to excite the L.V.D.Ts. and demodulates their outputs signals by means of sample and hold circuitry. By sampling the position signal twice in each cycle excitation ripple is eliminated. By sampling a third time in the next cycle a rate of change of position signal is obtained, i.e., velocity.
Patent GB-2079781-A (GB)
Title: Energy producing waste materials and methods of preparation, reaction, and disposal of toxic substances
IPC: C10B53/00
Filed: 1980-02-06
Abstract: Waste materials from the conversion of iron ore to pig iron or steel combine with a reducing metal, such as aluminium or magnesium, and a small portion of a mineral acid to form a reaction mixture which gives a heat output superior to many conventional fuels. The materials are processed in several steps to produce either a shaped or loose composition, a portion of which is then heated to a reaction temperature. Retardants for the reaction may be added. This composition may alternatively be admixed with sludge cake from a city sewage plant to produce a fuel which not only utilizes city sewage to some advantage but also gives a good heat output. The iron-containing reaction mixture of the present invention may also alternatively be advantageously used in a process for the disposal of the toxic and troublesome substances, polybrominated biphenyls (PBB); as well as other toxic substances. The reaction mixture, which gives a heat output superior to many conventional fuels at a very high temperature, is heated to reaction temperature with pure PBB or items contaminated with PBB to thereby chemically break down the PBB.
Patent GB-2048456-A (GB)
Title: Reducing NOx emission from burners
IPC: F23C7/02
Filed: 1980-02-28
Abstract: A method of reducing the NOx emission during the combustion of nitrogenous fuels in burners in closed combustion chambers, in which the combustion air is divided into two streams, the first stream 2 being supplied directly to the burner to effect partial combustion of the fuel in a primary zone 6, and the second stream 4 being supplied separately from the burner to its flame in a secondary zone 7 to effect complete combustion of the fuel. The air in the first stream is insufficient to effect complete combustion of the fuel, and the air in the second stream is in excess of that required for complete combustion. <IMAGE>
Patent GB-2044390-A (GB)
Title: Metal Lined Polymeric Pipe
IPC: F16L9/14
Filed: 1980-03-11
Abstract: A pipe for carrying liquids in heating or sanitary plants comprises an elastic, non-toxic, polymeric tube such as high density polyethylene and an inner, adhering copper sheath having a thickness from 2-30% of the thickness of the polymeric tube. An outer coating of polythene foam may be applied to the polymeric tube. The outer surface of the copper sheath may be smooth, corrugated, or knurled to improve adhesion.
Patent GB-2047586-A (GB)
Title: Die casting machine and method of cooling it
IPC: B22D17/20
Filed: 1980-04-10
Abstract: Cooling water serving to cool the pressure injection mechanism (17) and the mould of a pressure die casting machine is supplied intermittently, being co-ordinated with the casting cycles. Additionally the coolant is supplied to the injection mechanism intermittently, being adapted to the phases of the mould filling operation. Remote-controlled directional control valves (28, 29), one at the entrance to the common supply conduit (3) and one between the latter and a branch conduit (16) serving for supplying the respective mould halves via distributers (7, 8) and injection mechanism (17) are operated by timers (30, 31) provided in the machine control unit, one for each valve, with control times adjustable in accordance with the cycle time and with the phases of the mould filling operation respectively. <IMAGE>
Patent GB-2050193-A (GB)
Title: Salt conservation in regeneration of ion exchange resins
IPC: B01J49/00
Filed: 1980-05-19
Abstract: The quantity of salt required in brine regeneration of exhausted ion exchange resins is reduced by prescribed recycling. Brine from a concentrator (30) is passed onto and through a bed (26) of ion exchange resin, and the initial discharge of spent brine from the bed is discarded (16). Brine subsequently discharged from the resin bed is returned (17) directly to the concentrator for reconcentration and reuse in like manner. The resulting saving in amount of salt used lowers the regeneration cost and reduces the environmental impact inherent in wastage of chemical compositions. <IMAGE>
Patent GB-2050933-A (GB)
Title: Extruding inner liners for vehicle tyres
IPC: B29C48/335
Filed: 1980-05-28
Abstract: In one working operation or in directly successive working operations a tube 2 is extruded having at least two layers of different materials and the wall thickness thereof is structured to be wave-shaped or undulatory, i.e. has thick portions and thin portions at intervals. The thus formed tube sections are then cut from the tube to form the individual inner liners 50. The periodic variation in wall thickness is obtained either by altering the infeed of at least one material, or by constricting the flow passage through the extrusion head, or by changing the withdrawal speed of the tube. The materials are preferably two different rubbers. <IMAGE>
Patent GB-2078641-A (GB)
Title: Preventing stealing of liquid from a tank
IPC: B60K15/04
Filed: 1980-06-26
Abstract: A fuel tank having an orifice is guarded by a perforated obturator (12) at the end of a short tube that is inserted into the tank or forms part of the tank, the obturator being at that part of the tube that is inside the tank and above the fuel level. <IMAGE>
Patent GB-2070684-A (GB)
Title: Supply steam to IC engines
IPC: F02M25/022
Filed: 1980-07-07
Abstract: Steam generated in a copper tube coil or in a tank in or on the engine exhaust manifold is supplied to the intake manifold through a flexible pipe containing a jet. Water is supplied to the generator from a reservoir via an adjustable float chamber.
Patent GB-2054756-A (GB)
Title: Improvements in or relating to a fluid displacement device
IPC: F04B43/00
Filed: 1980-07-18
Abstract: A fluid displacement device comprising a tubular tie member 18 of an elastomeric material reinforced with layers 24, 25 Fig. 3 of helically- wound relatively inelastic filaments 23. Adjacent pairs of layers 24, 25 have their filaments 23 wound in opposite-handed relationship to provide a balance between the left hand and the right hand reinforcements of the tie member 18. An outlet valve and an inlet valve are at the respective ends of the tie member 18. When an axial tensioning load is applied to the tie member 18, its bore 21 is reduced in volume to discharge a fluid through the outlet valve and when the load is released, relaxation of the tie member 18 is accompanied by an increase in volume of the bore 21 which allows fluid to be drawn into the bore 21 through the inlet valve. In one form of the invention the device provides a mooring line 18 for a wave energy converter 10 Fig. 1 so as to pump seawater through a turbo- generator 56 in response to motion of the wave energy converter 10. <IMAGE>
Patent GB-2054592-A (GB)
Title: Production of an alcohol and a carboxylic compound
IPC: C07C29/14
Filed: 1980-07-21
Abstract: An alcohol and a carboxylate group-containing compound are produced by contacting an aldehyde in neutral or alkaline aqueous medium with a catalyst comprising a complex of palladium, platinum, rhodium, ruthenium, osmium or iridium. Under neutral conditions the carboxylate-group containing compound is a carboxylic acid and under alkaline conditions a carboxylic acid salt. The molar ratio of alcohol to carboxylate group-containing compound in the product can be modified by addition to the catalyst of a ligand such as tertiary phosphine.
Patent GB-2081197-A (GB)
Title: Vehicle sun visor
IPC: B60J3/02
Filed: 1980-08-06
Abstract: A sun visor for a motor vehicle comprises a mounting bracket (7) having a shaft (6) projecting therefrom, and a visor panel (1) rotatably mounted thereon by means of a connector (3). A clip (10) connected to the visor panel (1) comprises a spring leaf (12) which exerts a radial force on the shaft (6) to resist rotation and a radial ridge formation (13) which engages with a complementary groove formation (22) on the shaft (6) to resist axial movement of the panel (1) along the shaft (6) thereby avoiding the need for further fasteners. <IMAGE>
Patent GB-2083077-A (GB)
Title: Selective electro-plating method
IPC: C25D5/08
Filed: 1980-08-26
Abstract: The surfaces of the work pieces e.g. connector contacts and relay contact springs are masked on the areas not to be plated and the bare metal regions electroplated in an electrolytic bath with a precious metal e.g. gold, the plating using jet plating from a narrow jet (7) in box-like structure (6) aimed at the work pieces (1) via a wider slot in an anode (5) aligned with the regions to be plated, the work pieces being the cathode, (6), the slot in (5) and (1) all being below the plating solution surface. The masking may be achieved by applying a nickel flash to the workpiece, printing thereon a removable mask corresponding with the regions to be plated, electropainting the unmasked surface with epoxy-phenolic paint, stoving and then removing with solvent the removable mask. <IMAGE>
Patent GB-2061388-A (GB)
Title: Rotary positive-displacement fluid-machines
IPC: G01F3/06
Filed: 1980-10-09
Abstract: A pair of rotatable members (15, 16) are arranged for synchronous rotation within a body portion (10) of a fluid-flow meter. One of the members (15) is a rotor element (17) having blades (21, 22) movable within an annular duct (27), and the other member (16) is an abutment element (18) occluding part of the annular duct (27) and providing a transfer (29) to receive and transport each blade (21, 22) through the occluded duct portion. Fluid entering the annular duct (27) from an inlet port (34) acts upon each blade (21, 22) to induce rotation of the rotatable members (15, 16), thereby permitting the fluid to reach an outlet port (35). The blades are so arranged that open communication between the ports (34, 35) is prevented, and a given amount of fluid entering and leaving the device imparts a predetermined amount of rotation to the rotatable members that may be sensed as a measure of fluid flow rate. The abutment element may be furnished with pressure-balancing ducts (32). <IMAGE>
Patent GB-2060655-A (GB)
Title: Latex of vinylidene chloride copolymers, its preparation and use
IPC: C08L1/00
Filed: 1980-10-09
Abstract: Latex compositions for coating films to give heat sealable, anti- blocking coatings comprise 0.5-10 parts of particles of a vinylidene chloride copolymer (I) containing more than 94% of units derived from vinylidene chloride and 100 parts of particles of vinylidene chloride copolymer (II) containing 70 to 85% of units derived from vinylidene chloride, 10 to 28% of units derived from vinyl chloride and 2 to 20% of units derived from at least one other monomer. Plastics films coated with such a latex can be used to package foods.
Patent GB-2064442-A (GB)
Title: Tyre Beads
IPC: D07B1/06
Filed: 1980-10-10
Abstract: A tyre bead reinforcement comprises a circumferentially inextensible core c enclosed in elastomeric material, the material forming the outer surface of the reinforcement having a lower vulcanising speed than the remainder of the elastomeric material in the reinforcement. Semi- vulcanisation of the reinforcement prior to assembly in a tyre results in the material immediately surrounding the core c being sufficiently vulcanised to prevent distortion of the core c during tyre building while the material constituting the outer surface is still unvulcanised so as to enable satisfactory adhesion of the reinforcement to adjacent components of the tyre during building without any additional treatment of the reinforcement, e.g. application of an adhesive. As illustrated a wire core c is surrounded by elastomer 1 surrounded by an elastomer filler 3, the latter being covered by a spirally wound strip of elastomer 2 containing heat shrinkable cords 5 and in turn covered by a layer of elastomer 4. The vulcanising speeds of these components are in the order 1>/=3>2>4. <IMAGE>
Patent GB-2060510-A (GB)
Title: Lifejacket
IPC: B63C9/125
Filed: 1980-10-17
Abstract: A lifejacket comprises two chest flaps (1) and a neck portion (2) interconnecting the two chest flaps (1), the neck portion and chest flaps being inclined towards one another. The median planes (3, 4) extending through the chest flaps (1) and neck portion (2) abut at an angle of approximately 60 to 110 degrees, preferably between 80 and 90 degrees, over the shoulders of a life- jacket wearer. <IMAGE>
Patent GB-2064604-A (GB)
Title: Impregnation of rovings of fibres
IPC: B65H71/00
Filed: 1980-10-22
Abstract: Fibre rovings are impregnated with liquid at the moment when they are wound on a drum 5 after carding, division and rubbing. The drum 5 comprises apertures 6. A conduit 8 leads liquid axially into the drum and nebulizers 9 disperse the liquid on the inside thereof. The drum 5 is covered on the outside with a layer of absorbent material to distribute the liquid. <IMAGE>
Patent GB-2080984-A (GB)
Title: Electric quartz clock
IPC: G04B37/04
Filed: 1980-11-17
Abstract: The mechanism (4) of an electric quartz clock is retained in a clock housing (1) by means of a circular bottom plate (8) which is rotatably held in the housing by detents (5) and which presses on an electrical contact plate (6). On the circumference of the rear side of the housing at least three detents (5) are arranged, said detents rotatably engaging behind a rim (11) of the bottom plate. The contact plate (6) rests on the bottom plate and is engaged by the detents to prevent rotation between the contact plate and the housing. The bottom plate is on its outer side provided with fastening means, e.g. an adhesive layer (9). The arrangement permits the plate (8) to be fastened e.g. to a car dashboard, and the housing (1) containing the other parts to be then attached thereto and rotated to bring the mechanism into a desired orientation for reading. <IMAGE>
Patent GB-2068202-A (GB)
Title: Fishing floats
IPC: A01K93/00
Filed: 1980-12-05
Abstract: A float 10 comprises a buoyant body 11 provided with means 15 for guiding the body along a fishing line and arresting movement of the body on the line when the line is at a certain depth. The means 15 may be an eyelet or a notch and these means may be provided (e.g. coated) with a braking material such as rubber or plastic to facilitate the arresting action. <IMAGE>
Patent GB-2067378-A (GB)
Title: Electro-acoustic transducers
IPC: H04R9/04
Filed: 1980-12-18
Abstract: An electro-acoustic transducer of dynamic type, particularly a small loudspeaker or microphone, such as a loudspeaker for use in headphones, comprises a magnetic circuit 26 including an air gap 34, a diaphragm 20 having a voice coil 36 disposed in the air gap 34, and lead wires 38 for the voice coil 36, the lead wires 38 extending substantially tangentially from the voice coil 36 and being bonded to the diaphragm 20 by two different kinds of adhesive, a relatively hard adhesive 44 being used near the voice coil 36 and a relatively soft adhesive 46 being used near the periphery of the diaphragm 20. <IMAGE>
Patent GB-2068140-A (GB)
Title: Optical fibre cleaving apparatus
IPC: G02B6/24
Filed: 1981-01-02
Abstract: A hand-held fiber cleaving tool has an elongate channel for receiving a fiber 16, a shroud for exposing a part of the fiber 42 and a fiber cleaving unit including a cutting element 78 rotative through the shroud about an axis parallel to and spaced from the channel longitudinal axis for generally sectoral cutting of the fiber. <IMAGE>
Patent GB-2092291-A (GB)
Title: Combustion System
IPC: F23C13/00
Filed: 1981-01-15
Abstract: In a method of mixing fuel and air and burning the mixture, fuel is used to cool a plurality of parallel catalytically coated passages and is then fed as a vapour into upstream ends of the passages to mix with air passing through the passages. <IMAGE>
Patent GB-2092059-A (GB)
Title: Assembling a partitioned case
IPC: B31B11/00
Filed: 1981-02-02
Abstract: A partitioned case is assembled from a partition member (D) and a carcase (C). The partitioned member (D) is engaged by grippers (22) which transfer it from a turntable (2) into the carcase (C). During this transfer, adhesive is applied from guns (32) to attachment flaps (38) of the partition member (D) with the result that the inserted partition member (D) is bonded to walls of carcase (C). <IMAGE>
Patent GB-2069065-A (GB)
Title: Ceramic gas turbine rotor
IPC: F01D21/04
Filed: 1981-02-03
Abstract: The rotor comprises a ceramic wheel 14 having an inner row of turbine blades 16 and an outer row of compressor blades 18 separated by a mid-blade shroud 20, and an outer shroud 22 filament wound with a composite so as to form a hoop 24 providing compression loading of the ceramic components during rotation. The wheel 14 has a ceramic or metallic hub 12 for attachment to a shaft. <IMAGE>
Patent GB-2095717-A (GB)
Title: Positioning mine roadway supports
IPC: E21D11/40
Filed: 1981-03-26
Abstract: The invention provides both a method and a mechanism for positioning roadway supports 10, 12, 14, 16 in an underground working. The method employs the combination of a lifting force applied through a flexible element 62 and a control exercised during at least the latter part of the movement by control means, for example one or more articulated arms 46, 48. The mechanism includes the flexible element 62 having a device, 64, 66 for attachment to one of the supports 10, 12, 14, 16 and the control means such as the articulated arms 46, 48 adapted to engage with the support so as to exercise control over the movement of the support during lifting. <IMAGE>
Patent GB-2092784-A (GB)
Title: Apparatus and Method for Determining Characteristics of Subsurface Formations
IPC: G01V1/28
Filed: 1978-10-09
Abstract: A method for determining the bound water fraction of formations surrounding a borehole comprises deriving a plurality of measurement signals each representative of a respective characteristic of the formations. From these measurement signals, first second and third attenuation-representative signals are derived. The first and second signals are representative of the attenuation of electromagnetic energy attributable to the formations if substantially all the formation water were free water and bound water respectively, while the third signal is dependent upon the measured attenuation. The three signals are then combined to determine the bound water fraction.
Patent GB-2074891-A (GB)
Title: Growing Crystals
IPC: C30B7/00
Filed: 1981-04-16
Abstract: According to this invention a process for growing a crystal from a compound in a solution in which the compound has a negative temperature coefficient of solubility by suspending a seed crystal of the compound in a saturated solution (3) of the compound, comprises directing infra- red radiation substantially on the seed crystal (1) or in the immediate vicinity thereof. The infra-red radiation is absorbed by the surface of the seed crystal, heating it to a higher temperature than the solution and causing preferential deposition of solute to occur thereupon and not on the walls of the vessel. The invention may particularly be used for growing crystals of berlinite. <IMAGE>
Patent GB-2104374-A (GB)
Title: Drawer fronts
Inventor: BARNARD JAMES
IPC: A47B88/00
Filed: 1981-07-13
Abstract: This invention is a drawer front of sheet steel against which is fascia can be easily mounted by virtue of trough shaped sections (18) welded to the back wall of the front (13) and having front faces (21) projecting through respective apertures, the faces 21 being flush with a vertical plane containing the front edges of side flanges (14, 15, and 16) of the drawer front (13), and being capable of receiving attaching means to secure the fascia. <IMAGE>
Patent GB-2083496-A (GB)
Title: Cultivating anaerobic bacterium
IPC: C12M1/04
Filed: 1981-08-19
Abstract: A process for cultivating anaerobic bacterium, characterized by placing in a gas impermeable packaging bag or an air tight container (i) a culture medium inoculated with said anaerobic bacterium and (ii) a material having oxygen-absorbing property and carbon dioxide- generating property packed in a gas permeable hermetically sealing the gas impermeable bag or the air tight container, absorbing oxygen in the gas impermeable bag or the air tight container to less than 0.1% by volume within 10 hours and generating carbon dioxide in the gas impermeable bag or the air tight container, and maintaining the bacterium in a carbon dioxide concentration of 5-15% by volume and an oxygen concentration of less than 0.1% by volume.
Patent GB-2110026-A (GB)
Title: Print head and drive circuit
Inventor: DERC ROMAN
IPC: H03K17/64
Filed: 1981-11-19
Abstract: Wire printing apparatus includes a print head having at least one print wire and associated actuating mechanism and drive circuit. In the drive circuit a capacitor C1 is charged to a predetermined voltage through an inductance L1 and then discharged through the coil L2 of an electromagnet in the actuating mechanism. The current through the coil L2 is arranged to rise and then fall. The circuit permits optimisation to maximise the proportion of the energy input to the drive circuit which is transferred to the print wire. <IMAGE>
Patent GB-2088834-A (GB)
Title: Granulate Container for a Synthetic Plastic Material Injection Moulding Machine Provided with a Viewing Window
IPC: B29C31/02
Filed: 1981-12-09
Abstract: A granulate container produced from sheet metal for a synthetic plastic material injection moulding machine, has a viewing window of high-polymer material which is releasably secured in an aperture in a funnel-shaped container portion, the window being elongate and made by injection moulding and being situated with its axis of symmetry parallel to a generatrix of the container, the window comprises a peripheral groove which is bounded by a rim portion 45a internally and by a rim portion 45b externally, which latter rim portion is reduced at its relatively wide upper end moulded part, with the exception of a portion bounded by slots 46, to a base ridge 45c which is flush with the groove bottom, and wherein the rim 23a of the container wall which engages substantially in a single plane into the groove is offset relatively to the adjacent container wall by way of a continuous deformation zone of substantially the same depth. <IMAGE>
Patent GB-2092716-A (GB)
Title: Pressure Relief Device
IPC: F16K17/10
Filed: 1981-12-30
Abstract: A pressure relief device has an inlet (2) from a pressure chamber leading to a minor venting outlet (12) via a narrow gap (11) between the inlet (2) and an annular piston (8). If the outlet (12) is opened (by operating a valve or as caused by bursting of a rupture disc, for example), the pressure difference created on the faces of the piston (8) causes the piston to drop and expose a major venting outlet (6) for rapid relief of pressure. The concentric arrangement of the inlet (2) with an annular piston (8) enables a large major venting outlet (6) to be provided whilst keeping the overall diameter of the pressure relief device relatively small. The major venting outlet could be in a side wall rather than the end wall (5). <IMAGE>